Lubricator for engines.



J. D. JONES.

LumcAToR Fos eNG|NEs.

APPLICAUON FILED .IAN-8,1m?.

- Fateuted July 3, 1917.

Wax.

S14/vanto@ Y "narran erarnegrnrnnr unieron.

, JOHN D. JONES, OF WALLA YAIJLA, WSHIDTG'TON'.`

tunnrcnronron Encinas.

y ment for cooling the head of the piston with lubricating oil which is also applied to the outer ends ofthe cross-head pin and to the outer' face of the piston and the inner surface of the cylinder from` such cooling chamber. j v

A further object of this invention is' the provision of a novel construction of piston in which an annular lubricant receiving chamber is provided adjacent the closed end thereof for cooling the'hottest portion of the piston and at the saine time supplying lubrication to the essential parts.

vWith the foregoing and other objects in view and which will appear as the description proceeds, the invention resides in the combination and arrangement of parts hereinafter set forth and particularly claimed.

In the accompanying drawings:

4Figure 1 is a cross sectional view through an explosive engine cylinder showing the present form of piston in operable relation thereto.

Fig. 2 is a section taken on line 2--2 of Fig. 1.

Fig. 3 is a vertical sectional view through one cylinder and the crank case of an'e'ngine, embodying the present invention.

Referring to the drawings, the numeral 5 designates the cylinder of the engine and 6 the piston. The piston in this instance 1s provided with the packing ring grooves 8 of usual formation and below the lower groove is provided a circumferential lubricant conveying groove 8 of lesser width and depth than the packing ring groove.

The crank case 15 of the engine constitutes an oil reservoir in which dips the crank shaft 16 which has connected thereto thev connecting rod 17 which in turn is connected to the piston through the cross-head pin 10.

Cast integral with the piston within the hollow portion thereof are the two oppositely Specification of Letters Patent. i

Application led January 8, 1917. Serial No. 141,239.`

disposed bosses or lugs 9 eachone of which is bored to receive the ycross-head pin 10, a web 11 projecting from the upper surfaceof the lug to and engaging the under surface at opposite points of the upwardly and inwardly projecting lip flange or apron 12 which provides an annular lubricant receiving land cooling chamber 13 for the closed Patented July 3, 1911"?.

end of the piston. The lubricant is adapted v to be automatically placed in this chamber during theinward movement of the piston from the lubricant supplied to the crank case 17, and as this chamber is adjacent the hottest end of the piston the lubricant acts as a cooling means as well as a lubricator.

A lubricant conducting opening 111 is bored through the web to form a communication with the bore of the cross-head pin receiving boss and the lubricant chamber so that the ends of the cross-head pin are properly lubricated at all times while leading from the lubricant receiving and cooling chamber are the radiating bores or openings 15 which lead to and terminate in the groov l 8.

As s own in Fig. 3 it is evident that when the crank shaft during the rotation thereof enters the oil within the crank case that the same is splashed so as to in turn enter the piston and after contacting the upper end of the connecting rod and the closed end of the piston is directed into the ange or apron 12, thus cooling the upper end of the piston and at the same time supplying lubricant t the exterior of the piston and through the openings le to the ends of the the cylinder and to the ends of the cross- .head pin to lubricate such points.

What claim as new is:

1. A piston having internal oppositely disposed cross-head pin receiving bosses and an annular cooling and lubricating Huid receiving chamber above said bosses, the piston being closed at its upper end and open,

at its lower end and substantially unobstructed eXcept b the Wrist-pin and said bosses, said cham er having bores leading therefrom to the bosses to conduct said fluid to the cross-head pin.

2. A piston having internal oppositely disposed cross-head pin receiving bosses and an annular cooling and lubricating fluid receiving chamber above said, bosses, the pis- 10 ton being closed at its upper end and open at its lower end and substantially unobstructed except bv ythe Wrist-pin and said bosses, said chamber having bores leading therefrom to the bosses to conduct said fluid 15 to the cross-head pin, said chamber being further provided with a plurality of bores leading to the outer face of the piston to direct the Huid as a lubricant to the pe-YAY riphery of the piston.

8. A11-'explosion engine piston having a transverse bore for the reception of a crosshead pin, a flange between said bore and the closed head of. the piston, tWo reinforcing Webs for said flange, said Webs having passages therethrough communicating With the chamber formed by the flange and With the bore. Y

In testimony whereof I aHiX my signature in the presence of tWo Witnesses.

JOHN D. JONES.v

l/Vitnesses:

A. A. KING, W l?. BIRKES. 

